Have students slide to the edge of their chairs—do this in partners to help hold the chairs in place. Tell them to grasp the sides of their chair, fingers pointing toward floor, and slide their bottom off the chair (arms holding them up) enough so that they can raise and lower their body, knees should be in a 90-degree angle. Have them use their arms to lower their bottom toward the floor and raise back up. Do 15 repetitions. Partners then switch positions. Repeat 4 times.